Type-writer attachment.



J. L. WALKER.

TYPE WRITER ATTACHMENT.

APPLICATION FILED OCT. 22, 1910.

Patented July 2, 1912.

2 SHEETS-SHEET l.

' INVENTOB ZpWITNESSES 6 M fiyfli m ATTORNEY L. WALKER. TYPE WRITER ATTACHMENT.

I0 101w o 1,031,215. APPL u rum) 0'! 22 1910 Patented July 2 1912- INVENTOR v 7 $17, 5 jacfl (ad/#6 ATTORNEY JACK L, WALKER, OF DALLAS, TEXAS.

TYPE-WRITER ATTACHMENT.

Specification of Letters Patent.

Application filed October 22, 1910. Serial No. 589,001.

To all whom it may concern:

Be it known that I, JACK L. \VALnun, citizen of the United States, residing at Dallas, in the county of Dallas and State of Texas, haie invented certain new and use ful Improvements in Type-WVriter Attachments, of which the following is a specifi cation.

This invention relates to new and useful improvements in typewriter attachments.

In certain instances it is desirable to count the number of words written in each line or to Write on each line a certain number of words as writing telegraph messages, and it has generally been the practice to count the words by observation.

It is therefore the object of this inventionto provide an attachmentwhich may be so cured to an ordinary typewriter and connected with the space bar mechanism and the spring drum whereby after a predetermined number of words have been written on a line, an audible signal will be sounded.

Further features reside in the arrangement whereby the attachmentwill be op erated one step or moved along-one tooth each time the spacing bar is depressed; and also the provision whereby the attachment may be set to sound the signal for a certain number of words or a greater number.

Finally the object of the=invention is to provide means of the-character described that will be strong, durable, efiicient, and easy of operation,-s1mple and comparatively inexpensive to construct,.and also in which the several parts will not be likely to get out of working order. f

With the aboveand other objects vin view, the invention .has relation to certain novel -features of construction and operation, an

example of which is described in this specific'ation and illustrated in the accompanying drawings, wherein:

Figure 1, is a side elevation of a. typewriter with the attachment secured thereto, the attachment wa portion (of the type Wr r ame-b ng hown i sjs a rear elevati n of a P i O 1161 21 s? ttach n and His. ,1

' thedfrawirs the numeral 1 designates :RemingtQu yp wr ter 2 j lie pring carriage actuate asrcop eqted to t c rr age,

Patented July 2,1912.

by the tape 40, 4 the spacing bar, and 5 one of the spacing bar levers. 1n the particular style of typewriter mentioned the drum 3 is in the form of an eccentric with a gap in its periphery. W'hen the carriage 2' is returned to begin a new line of writing, the drum is rotated in the direction of the arrow B Fig. 2, and the spring (not shown) in the drum is wound.

In writing the carriage moves in the reverse direction and the drum reverses its direction of rotation as indicated by the arrow A and thus pulls the carriage along the frame as a line is written. The operation of this drum is so well known in the art that a detailed illustration and description of the same is believed unnecessary.

The attachment can be applied to other makes of typewriters.

The attachment comprises an elongated base barf6 adapted to fit between the rear posts 7 of the typewriter. On its rear side and near each end the bar 6 is provided with clips 8 which are engaged with the posts to fasten the bar in place, the bar being thus removable or readily attached to .a typewriter frame.

A U-shaped frame 9 having its extremities directed upward is secured on the bar a short distance from the end opposite to that extending under the drum 3. Near the upper end of the frame a horizontal bar 10 square in cross section is secured. A pair of sleeves 11 and 12 respectively are arranged to slide longitudinally on the bar 10. The sleeve 12 is disposed on the bar, 10 between the sleeve 11 and the drum 3.

From the forward side of the sleeve 11 an car 13 extends. A flexible connection 14 has one end attached to'the ear and the other end fastened to the drum 3 sothat sleeve 12 a similar bar 16 depends. These bars are alined and registered. The bars 15 and 16 each have five teeth.

From the rear side of thesleeve 11 a bell striker 17 extends horizontally. At the left hand end .of hebar 10, withmeference to gig a 18 isseeured. egrthelhell a nection 14 acts to draw the sleeves away interference between the said connection :tached to the pin 19 ma be engaged over .ing'in the direction of the arrow A Fig. 2.

If it' is desired to have the striker 17 engage the bell after ten ords have been writ- ;ftn, the spacin k l'nfter'each wor the free end of the spring sired to haye 'the bell sounded after 'writ- -ing ;five words, the free end of the spring ..is engaged only over the stud 20, the sleeve 10rwhere it remains out of operation.

bracket '23 secured on the horizontal porvided at one end witha depending pivot lug 25 pivoted in the bracket 23. At the rejects outward.

0f the path of the rack bars.

will be moved into the teeth thereof. A 7 short arm 27 extends rearward from the upper end of a coil spring28 which is con- This spring acts to hold the espapement in pin .19 extends upward from the bar 10. The sleeves 11 and 12 each have an upwardly extending stud 20 and 21 respec: tively. These studs are disposed near the adjacent ends of the sleeves in such relation that the end of a coil spring 22 atthe studi20 orfover both t e studs 20 and 21. The spring 22 acts to move the sleeves alo the bar. toward the bell; while the confrom the bell and against the tension of the spring when the drum is wound, or in other words when the typewriter carriage is returned'to. begin the writing of a new line. A suitable escapement device hereinafter described is provided and connected to the spacing bar lever 5. This device operates to release the sleeves and permit the spring 22 to draw them the distance of .one tooth toward the bell 18 each time the.

its free end it has an upstanding dog 30 normally engaging the teeth of the rack bar. The pawl is forced upward by aspring 31 secured to the escapement and engaging the underside of the pawl; while the upward movement or swing of the pawl is limited v by a stop 32 bent upward from the outer end of the escapement and extending over the pivoted end of the pawl. a

From the lug 25 a lever arm 33 extends forward and to one side as is shown in outer and free end extends above the spacing lever 5 and substantially parallel there to. The-upper end of a vertical hook 34 is pivoted to the end of the lever arm 33. hook is engaged under and about. the lever 5 and thus when the lever is depressed, the book will swing thelever arm downward. 7

When the lever arm 33 is swung down-. ward, the escapement is swung forward a spacingbar is depressed, the drum 3 rotatlt-suilicient distance to withdraw the dog 3O "It is to be noted that when the connection 14 is wound on the drum 3 the tape 40 is unwound therefrom and vice versa when the connection 14 is unwound the tape 40 is wound. By this arrangement there is noand tape.

bar being depressed once 22 is enga ged over both of the studs 20 and On the otherhand should it be de- 12 being movedto thednner. end of the bar 'f-Hhe ,es a mga; device comprises a tion of the frame) near .thecenter thereof.

A laterally extending escapement 24; is prosame end of the esca pement a rigid dog 26 i he .escapement normally lies at an'angle with the dog 26 out The escapement member is adapted to be swung transversely of the'rack bars and so that the dog lug 25 and at its outer end engages the nected at its lower end to the base bar 6.

its normal position and to return the parts Ito normal position when pressure on the :Spacing bar has been relieved.

" On the outer end of theescapement a pawl 29 is hinged. This pawl extends over from between the teeth of the rack bar. As the .dog 30 is withdrawn transversely from the teeth, the dog 26 is swung into the teeth of the rack bar. The distance between the dogs is such that when the dog 30 is disengaged from the teeth, the sleeve or sleeves will be drawn toward the hell :1 sutticigpt distance to permit the point of the to h 'Fig. 3. This lever arm is bent so that its The Y with whichthe dog 30 has been previously I engaged tomove slightly past the upper edge of the said dog. This slight move Inentof the sleeve or sleeves will be limited by the engagement of the following tooth with the dog 26. When pressure is relieved on the spacing bar, the spring 28 will swing the escapement back to its normal position, As the escapemcnt is swung back the dog 30 enters between the same two teeth bet-ween which the dog 26- is project ing, that is the tooth with which the dog ,30 has previously been engaged and the follow .ing tooth. The continued rearward movement of the escapement withdraws the dog 26- from the teeth and permits the spring I 22 to draw'the sleeve or sleeves toward the bell until the following tooth engages with the dog 30. Thus on each forward and backward swing of the escapement the sleeve or sleeves move the distance of one tooth toward the bell. As the dogs of the escape ment are disengaged from the last tooth, the sleeves. or sleeve are released suddenly and will be drawn toward the bell with sufficient force to cause the striker 17 to-hit the edge of the bell and produce an audible signal. When the carriage of the typewriter is returned the sleeves are likewise returned by the winding of the connection 14 on the drum 3, which latter is rotated in the direction of the arrow B Fig. 2. It is obvious that as the sleeves are moved to the right placedounder tension.

It is to be understood that in most typewriterS especially the Remington with which this device is illustrated, a drum or eccentric such as the part 3 is connected with a spring having one end fixed A tape such as the part 40 has one erid secured to e peripheryof the drum and the other en attached to the carriage of the typewriter. The tape is wound' one or more times aboutthe, drum, "the drurn'being placed under the tension of the spring. When the carriage is returned to the beginning of the line of writing said tape is unwound from the drum. The connection 14 is attached to said drum so that as the tape is unwound and the drum rotated, said connection will be wound thereon.

The spring 22 is o flight construction such as may be extended a considerable distance and remain under tension until it is returned to its normal condition and its coils contact one with the other.

What I claim is z 1. In a typewriter attachment, the combination with the spacin bar lever and the spring winding drum 0 a typewriter, a support attached to the typewriter frame, an

audible signaling device, a slidable sleeve mounted on the support and having depending teeth, a connection between the sleeve and the sprin winding drum, a spring for drawing the s eeve toward the signaling device, and a pivoted esca ement engaging the teeth of the sleeve an having connection with the spacing bar lever.

2. In atypewrlter attachment, a base bar for attaohmentfio a typehaving pIOVlSlOIl writer, a support mounted on the bar, a bar mounted in the support, a bell at one end of the last named bar, a sleeve slidable on the last named bar toward and frornthe bell, teeth depending from the sleeve, an escapement device pivoted in thesupport to swing transversely of the teeth and provided with dogs engaging the teeth, a lever extending from the escapement device and adapted to have connection with the lever of a typea a support near writer spacing bar, a spring having connection with the sleeve at one end and held adjacent the bell at the other end, and alignnection attached to the sleeve extending in a direction opposite to the spring and adapted to be attached at its far end to the spring winding drum of a typewriter.

3. In a typewriter signaling device, a bell,

a support, a striker device movable on the support toward and from the bell and com prising two parts arranged to operate together, one of said parts being arranged to operate without the other, and an escapement release engaging with the striker parts and having provision for connection with the lever of a typewriter spacing bar.

4. In a typewriter attachment, a base hav-' ing provision for attachment to a typewriter, a support mounted on the base, a bar mounted in the support, a bell at one end of the last named bar, a pair of sleeves slidable on the bar, studs projecting from the sleeves in adjacent relation, teeth depending from the sleeves, an escapemcnt device pivoted in the support to swing transversely of theteeth and provided with dogs engaging the teeth, a lever extending from the escapement device and adapted to have connection with the lever of a typewriter a spring having connection with the bell and adapted to have its free end engaged over one or both of the studs, a connection extending from one of the sleeves adapted to be engaged with the spring windin drum of a typewriter, a striker projecting from one of the sleeves, and a spring having connection with the escapement device.

spacing bar,

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

, J ACK L. WALKER \Vit-nesses L. NoAcK, JAoK A. ScnLEY. 

